Linux/AM3358: Ethernet DHCP problem

MADHU GANDEPALLI

Expert 1300 points

Part Number: AM3358

Tool/software: Linux

Hello All,

I have designed a custom board of AM3358 which is designed based on General Purpose EVM.

Ethernet was working fine without any glitches and dhcp, assigning ip address were running fine.

Suddenly ,one day while testing other peripherals I have observed that DHCP failed . Insertion and removal of LAN cable is also being detected but ip address is not being assigned.

Assigning the IP address manually also not working . Ip address will assign but communication with the network not happens.

I seriously feel that there is a hardware problem and any of the connections have gone bad. As I am quite new with the hardware section of Ethernet , i could not identify the problem.

Kindly help me in identifying the problem and resolve it at the earliest.

Regards

Mad_hu

over 7 years ago

0 Biser Gatchev-XID over 7 years ago

TI__Guru**** 393215 points

Is this a single board? Do you observe the same problem on multiple boards?

0 MADHU GANDEPALLI over 7 years ago in reply to Biser Gatchev-XID

Expert 1300 points

Hello Biser,

This problem is on only one board.

Regards

Mad_hu

0 Biser Gatchev-XID over 7 years ago in reply to MADHU GANDEPALLI

TI__Guru**** 393215 points

If you have other identical boards functioning properly, then this is definitely a hardware problem - bad soldering, short circuit, broken track, defective component.

0 MADHU GANDEPALLI over 7 years ago in reply to Biser Gatchev-XID

Expert 1300 points

Hello Biser,

I too feel the same .

Can you suggest or comment which section of the Ethernet have gone bad. Tx or Rx or MDIO ?

Regards

Mad_hu

0 Biser Gatchev-XID over 7 years ago in reply to MADHU GANDEPALLI

TI__Guru**** 393215 points

For MDIO you can check the boot log. The PHY should be detected by the MDIO driver. For the MII interface you should scope the signals to determine.

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Linux/AM3358: Ethernet DHCP problem